Joule Thief

[NickZ]

  The Joule Ringer circuit designed by Lasersaber is a single transistor circuit using  no other component. It can be made equally with a 2n2222, as with the 2n3055.
Although the 2n3055 transistor is less efficient than a 2n2222, it can handle more current. But, if you're thinking of winding a coil it can be done on a E-core, a straight ferrite rod, or even using several ferrite beads to make a rod with, or even a rod made of several 1/2 to 1 inch size torroids together to form a tube.  This is the easiest of any circuit to make, and can be used from 1v to 12v, or even higher voltages.
  In the picture below I'm using a ferrite rod (1/4  by 3 inches) obtained from a old transistor radio, and I'm also showing the bigger rod which was made using 4 ferrite beads from old crt monitors, or Tv sets that were discarded. You can see how simple this circuit is.  If anyone is interested I'll upload a wiring diagram in my next post.
  It can be used to light Led, Cfl, or even incandescent bulbs.

  The second picture is of a JR 3.0 circuit connected to a tv yoke coil lighting both an Led bulb and a Cfl halo tube.
It can light incandescent bulbs to 50 watts, but does best with the 7watt incandescent bulbs.
   To use only 1.5v batteries, the secondary coil have to be of several hundred winds, similar to the Jeanna Light.
  Or several AA batteries can be used to bring the voltage up to any voltage needed.
Like in the last picture where I'm showing a AA holder made of 1/2 inch pvc pipe for 6 or more AA batteries. It was used for the Joule Ringer "cross-over" circuit. 
All fun circuits...
 

[NickZ]

  Here is a recent video by Lidmotor, showing a button cell powered Exciter in action. However the tiny source battery located inside the Exciter's secondary coil is not being recharged by the wireless or wired connection, and still drains in time.
  http://www.youtube.com/watch?v=lpGgB2gxxQk&list=UU9jbwyyAum79LXTNCgHeuFg

 

[Pirate88179]

Here is a little HVJT light I made for my Daughter's 24th birthday present.  It looks cool and is very bright and I think she will like it.

Bill

[Pirate88179]

  Here is a recent video by Lidmotor, showing a button cell powered Exciter in action. However the tiny source battery located inside the Exciter's secondary coil is not being recharged by the wireless or wired connection, and still drains in time.
  http://www.youtube.com/watch?v=lpGgB2gxxQk&list=UU9jbwyyAum79LXTNCgHeuFg

Nick:

Yes, I saw this.  He does some great work over there.  I still think that there should be a way to feed back some of that inductive energy to the battery...it may have to be polarized in some way...who knows?  Maybe, there is no way to do it.

I did some research on the Joule Ringer circuits on Laser's website.  man, according to his numbers, that thing uses a lot of power.  I think it was the 2.0 where he said it kills a new 9 volt battery in 5 minutes...and the light is very dim for another 5.  One of the circuits was drawing 3 amps!  To me, this is just like using a transformer or an inverter from a solar cell set-up.  I also do not see the feedback arrangement as in a JT circuit so as to be able to totally (or near so) drain the batteries?

I agree that the lights are brighter but, he is using 12 volts and 3 amps.  Heck, if I went to 3 volts instead of 1.5 my lights would be twice as bright but the amp draw would still be in the low mA range.  I guess I am missing something with this circuit, or circuits.  I checked out the 3.0 and it still has a very high amp draw for my tastes.  Probably very useful if you have solar and do not care about the power draw because it is free.  I just don't see this being able to run a light for a month on a single battery.

Your circuits look great though.  Are you using them in any lights at this time?

Thanks,

Bill

[Pirate88179]

I just ordered a 2500 lumen led chip module.  I want to see if I can get it to light up using high voltage/high frequency.  pretty cheap for an experiment and free shipping too:

http://dx.com/p/7041-20w-1500-2500lm-6000-6500k-white-light-square-shaped-10s2p-integrated-led-module-33-35v-197194     

(http://img.dxcdn.com/productimages/sku_197194_1.jpg)     <<<<Click to see image

Bill